Gacha games are a type of mobile game that typically involve collecting and assembling teams of characters. These characters are usually obtained through a randomized virtual "gacha" system, which is often similar to gambling. While Bleach Brave Souls does have some gacha elements, such as the ability to summon characters from the series, it is not considered a true gacha game. This is because the summoning system in Bleach Brave Souls is not based on chance, and players are guaranteed to get the characters they summon.