Red7 is a free print and play card game from Carl Chudyk, designer of the legendary Glory to Rome. In it, you play numbered, color cards to either build your color palette or change the scoring conditions.
Blankout is a free roll and write game in which players try to fill up a grid with tetomino shapes. A roll of a die determines which shape players must use, but the shapes can be rotated to fit on the grid. The last player who can still fit a piece in, tetris-like, is the winner.
Bower is a free print and play game about Australian Bowerbirds collecting items to increase the visual appeal of their nests.
Collecting and decorating is a thing with the species, as you can see from the nest below:
Magma is an abstract territory control print-and-play game from Invisible City
Onitama is a neat, two player abstract game from Arcane Wonders. Played on a 5×5 board, it is a bit like chess or checkers in that pawns move about the board capturing each other. The twist is that the movements are controlled by cards which go back and forth between the players.