Olos is similar to Mau Mau or UNO! a card discarding game for 2-8 players. You have to defend your own points in several rounds. The player who discards all their cards first wins a round. The losers then get the sum of the points of all their not yet discarded cards as a...


Olos is the most popular Web-based alternative to UNO!.
Olos is the most popular free alternative to UNO!.
- Olos is Free and Proprietary










Gidd.io looks much cleaner can be used by everyone.