I've got my indie gamedev gun aimed at your hearts, not your wallets!
My kids on Steam are:
Nary - a hardcore rogue-like runner!
Grizzland - a minimalistic black&white metroidvania with sword fights, created in a resolution of 128x96 pixels!
Plastris - a puzzle, in which you need to fill the grid while using 2 shapes: one places items into cells and another one - removes them.
Shatris - another tiny puzzle about placing different tetris-like blocks on the level until there's no empty space left.