I've just released another Print and Play game. It's a card game called Racing Dogs for 2 to 4 players and lasts about 30 minutes.
The theme of the game of game is players betting on dog races, although I have strictly left the work "Betting" out of the game materials.
Instead of money, players place tokens on the dogs and then score points based on the token values at the end of the race.
Each player gets a hand of cards numbered variously from -4 to +7. That also get three tokens with values of 1,2 and 4.
In each race three dogs run. Before trhe race starts each player places their three tokens one on each dog. The clever bit here is the one of the tokens is face up and the other two face down. This means that there is some information about who's backing each dog but it's not complete.
Then players start playing cards from their hand one at a time onto a dog of thier choice. The numbers on the cards are added up for each dog after every card play, and as soon as one reaches 20 it's won the race. The players then score points equal to the token placed against the winning dog.
It's mechanicly very simple but includes some player interaction and back stabbing but also players will all score every round meaning it stays close right to the end. This also means that every card play matters as you have to make choices about pushing your dog forwards or holding back others.