MoltKeeper

Every creature is yours
Pick one of five bodies, snap parts into its nine sockets, name it. Attacks, reach, speed and abilities come entirely from the parts. What you see is what it does, and any part fits any creature.Place them, then watch
Up to six creatures on a 7-by-14 board. One wave, about a minute, nobody at the controls but you spending each creature's burst at the right moment. Six elements and three fighting families each lean a fight, never decide it.Unlock the parts your enemies wore
Every enemy wears real parts, and each win pays samples of them. Collect enough and the part is yours to research, then grow to five stars. The parts your enemies carry are the tech tree, and the rarest mutations are found only on wild creatures.Your builds fight other keepers while you are away
Release a frozen copy of a creature into the Wilds. It appears in other keepers' stages, and the report says who beat it and with what. Five Rival challenges a day, weekly boards, and Renown that buys looks money cannot.Expeditions, then the Deep
Benched creatures go gathering for hours and come home with samples and levels. After the eight-chapter campaign, the Deep's floors go down for ever, reset every Monday, and hand out parts found nowhere else.Free, and honest about it
Money buys Amber (timers, looks, Den room) and two optional monthly tiers. Nothing bought touches a stat, a part or a fight. No ads of any kind on Steam. Keyboard and mouse first; one account shared with the phone build.

Five to fifteen minutes a session. Not for under 13s: keeper names and taunts are shown to other players.