Could you add Familiars of Zaetera? https://toyhou.se/~world/136825.familiars-of-zaetera
It's a Battle Gatcha game; you get your first for free and can use it to battle others, increase your stats, gain more familiars. There are 5 different species you can collect, coming in various colors, with various abilities and starting stats. You can build up your character as you please, setting their stats to make them more tanky, speedy, or otherwise. You can get more gatcha rolls through collecting tokens from battle or purchasing them.