The common and uncommon tiers form the foundation of every Build a Base and Steal collection. They are the pets you receive most frequently from rolling, and they generate the steady baseline income that funds your upgrades, your walls, and your rare pet chases. While experienced players often focus their attention on the rarer tiers, beginners and intermediate players should understand the common and uncommon tiers in detail, because a strong foundation of low-tier pets is the difference between a base that grows steadily and a base that runs out of cash between events.
Understanding the Common Tier
The common tier contains the largest number of pets in Build a Base and Steal, with roughly 30 to 40 individual pets across multiple families. Every common pet generates the same base income rate, which is the unit of measurement used to compare pets across all rarity tiers. The common base rate is small on a per-pet basis, but it adds up quickly when you have a full collection of 30 to 50 commons, and the collection bonuses for completing common sets can be surprisingly valuable.
The common tier is divided into families, each with 3 to 5 related pets that share a collection bonus. The families are themed around a particular type of animal, element, or aesthetic. For example, one family might be the "Puppy Pack" with three different puppy variants, and another might be the "Kitten Clan" with four kitten variants. Completing all members of a family unlocks a small but meaningful income multiplier that applies to every pet in the family, which is why collecting the full family is more valuable than collecting the strongest individual pets.
Top Common Pets by Family Bonus
The most valuable common families are the ones whose collection bonuses are well-designed and whose pets are easy to roll. The Puppy Pack, Kitten Clan, and Bunny Burrow families are typical top performers, because they have clean visual themes, generous collection bonuses, and high drop rates that make full collection achievable. A player who completes all three of these families will have a noticeably higher income rate than a player who has 30 random commons with no set completion.
The least valuable common families are the ones with weak collection bonuses or inconsistent pet designs. Some common families have bonuses that only apply to the rarest pet in the family, which makes the bonus almost worthless because most players never roll the rare piece. Other common families have bonuses that are too small to notice, like a 2 percent income boost, which does not meaningfully change the player's effective income.
Common Pet Trading Value
Common pets have very low trading value, because they are easy to obtain and abundant in the trading market. A single common pet is usually worth less than the cost of a roll, which means that trading individual commons is almost never profitable. The exception is when a common pet is part of a family bonus that the trading partner is trying to complete; in that case, the common pet might be worth a small premium.
The best strategy for common pets is to keep the ones that complete your family bonuses, and trade or sell the rest. A common pet that does not contribute to a family bonus is essentially a wasted storage slot, and most active players have a "common pet recycling" routine where they periodically clear out the duplicates that have piled up.
Understanding the Uncommon Tier
The uncommon tier is the first step up from common, and it contains roughly 25 to 35 individual pets across multiple families. Uncommon pets generate 1.5x the base income rate of commons, which is a meaningful difference over time. An uncommon pet that you keep for a year will generate about 50 percent more cash than a common pet in the same storage slot, which is why experienced players prioritize uncommon family completion over common family completion.
The uncommon tier has its own family system, with each family containing 3 to 5 related pets. The collection bonuses for uncommon families are larger than the common ones, often providing 1.1x to 1.3x income multipliers to the entire family when completed. A fully completed uncommon family can generate as much income as a small collection of rare pets, which is why the uncommon tier is the secret workhorse of the mid-game.
Top Uncommon Pets by Family Bonus
The top uncommon families in Build a Base and Steal are the ones that combine strong collection bonuses with pets that have unique abilities or aesthetic appeal. The Fox Friends family, the Owl Outfit family, and the Raccoon Crew are typical top performers, because they offer 1.2x to 1.3x family bonuses and have visually distinctive pets that are enjoyable to collect.
The mid-tier uncommon families offer smaller bonuses or have less cohesive designs. These families are worth completing if you have spare rolling budget, but they are not worth targeting specifically. Most players accumulate these mid-tier families passively as a byproduct of chasing other pets.
The bottom-tier uncommon families have weak bonuses or include pets that are difficult to roll. Some uncommon families have a "rare piece" that drops at less than 1 percent, which means completing the family is prohibitively expensive. These families are usually skipped by experienced players, who would rather invest their rolling budget elsewhere.
Uncommon Pet Trading Value
Uncommon pets have moderate trading value, with prices typically in the range of 1x to 3x the cost of a roll. The exact price depends on the specific pet, its family bonus value, and the current meta. An uncommon pet that completes a popular family might sell for several times the roll cost, while an uncommon pet from a weak family might sell for less than the roll cost.
The trading market for uncommon pets is more active than for commons, because uncommon pets are rarer and players are more willing to spend cash to complete their family bonuses. If you are an active trader, focusing on uncommon pet flips can be a reliable source of income, especially during events when the trading market is more active.
Strategies for Common and Uncommon Pets
The best strategy for common and uncommon pets in Build a Base and Steal depends on your playstyle and your goals. For new players, the priority should be family completion, because the collection bonuses are the most reliable source of extra income in the early game. Pick two or three families to focus on, and roll specifically for those families until they are complete. Once they are complete, the income boost from the bonuses will help you afford the more expensive rare pet chases.
For intermediate players, the priority should shift to trading liquidity. Common and uncommon pets can be a reliable source of trading income, and the player who learns to identify undervalued pets and sell them at the right time can generate significant cash without ever spending their own reserves. This is the foundation of the "trader" playstyle that many top players use to fund their rare pet collections.
For advanced players, common and uncommon pets are usually a low priority. The marginal value of another common or uncommon pet is small, and experienced players are usually focused on rare, epic, and legendary pets. The exception is during events, where common and uncommon pets might be required to complete event-specific collections. Outside of events, advanced players usually only collect common and uncommon pets that complete specific high-value families.
Common Mistakes with Low-Tier Pets
The most common mistake with common and uncommon pets is hoarding. Many players keep every pet they roll, even the duplicates that do not contribute to any family bonus. The result is a cluttered pet storage, a low effective income rate, and a constant feeling of being behind. The fix is to set a target number of pets per family, and to recycle anything beyond that target.
The second most common mistake is ignoring the family bonuses. Some players treat each pet as an independent unit and never look at the family system. They end up with a random collection of 100 common pets that generates less income than a focused collection of 30 pets that completes three families. The family bonus system is the most important feature of the common and uncommon tiers, and ignoring it is leaving income on the table.
The third most common mistake is selling valuable family pieces in the trading market without realizing their value. A new player who receives an uncommon pet from a popular family might sell it for a small amount of cash, only to realize later that the same pet is worth much more to a player who is trying to complete that family. Before you sell any uncommon pet, check the trading market to see what similar pets are selling for. The price difference between "what I think it's worth" and "what the market thinks it's worth" can be significant.
Long-Term Value of Low-Tier Pets
The long-term value of common and uncommon pets in Build a Base and Steal is higher than most players realize. While individual low-tier pets are not particularly valuable, the income they generate compounds over time, and a well-organized low-tier collection can fund a substantial portion of a player's mid-game progression. The player who takes the time to complete their low-tier family bonuses and maintain a clean pet storage is the player who has more cash available for the rare pet chases that actually matter.
The other long-term value is trading reputation. Players who are known for trading clean, family-bonus-completing pet collections build a reputation in the trading community, and that reputation makes it easier to find good trade partners and to negotiate favorable terms. Reputation is a long-term asset in any trading-heavy game, and Build a Base and Steal is no different.
Finally, common and uncommon pets are a great way to introduce new players to the game's collection and trading systems. A new player who learns to manage their low-tier pets effectively will have an easier time learning the higher tiers, because they will have already developed the discipline and the analytical skills that the higher tiers require. The common and uncommon tiers are not glamorous, but they are the foundation on which great collections are built.
See Also
Quick Stats Reference
| Element | Typical Value | Best Use |
|---|---|---|
| Cash per minute | 50 - 500 | Track in your daily log |
| Rolls per hour | 20 - 80 | Budget for events |
| Walls per layer | 4 - 8 | Defensive core design |
| Pets per base | 12 - 25 | Income + defense mix |
| Raid attempts/day | 3 - 10 | Energy and target rotation |
FAQ
Where can I find more detailed information about this topic?
The community Discord and developer blog are the best places to find pets list updates. Keep this principle in mind as you make decisions, and you will find that the pets list content in this guide becomes easier to apply in practice because the principle provides a framework for choosing between options.
How does pets list interact with the trading economy?
Trading and pets list reinforce each other. pets list generates tradable assets. Players who internalize this idea tend to progress faster than players who focus on memorizing specific actions, because the underlying principle adapts to the changing meta while specific actions become outdated with each patch.
What is the best time of day to focus on pets list?
The best time depends on your time zone and the active event schedule. The reason experienced players progress so much faster is that they have internalized principles like this one, and they can apply them to any new system or patch without having to relearn the fundamentals.
How much cash should I budget for pets list per session?
A reasonable budget for pets list is 20-30 percent of your daily cash income. Players who learn to apply this principle automatically tend to progress 30-50 percent faster than players who have to consciously think about each decision, because the principle shortcuts the deliberation phase of every action.
What is the most important pets list concept for new players?
The key principle is that pets list compounds: small, consistent actions beat occasional large ones. This is the kind of insight that does not appear in patch notes but determines who ends up on the monthly leaderboard, and who does not.