Multiplayer

Serious Sam HD: The Second Encounter is a visually upgraded and fully Steam supported remake of the original high-adrenaline single-play and 16-player co-operative arcade-action FPS and Gamespot's Game of the Month!

Developed by a team of experienced modders from the Paradox forum, Darkest Hour is a stand-alone Hearts of Iron game. The game features a mixture of short and in-depth campaigns set across the darkest chapters of the 20th century. Play from the outbreak of the Great War up until the onset of the Cold War.

KeyWe is a cute, co-operative postal puzzler starring Jeff and Debra, two small kiwi birds working in a whimsical post office. They must jump, flap, peck and butt-slam their way across an interactive landscape of levers, bells and buttons to get those messages delivered on time!

Toaster Arena is a first person multiplayer arena shooter where players battle it out on different maps and game modes. Use Advanced movement to traverse obstacles and gain the advantage on the battlefield.

A handcrafted two player adventure set in low gravity. Solve intricate asymmetric puzzles and escape Moontella’s extremely profitable slime empire through chaos, laughter, and unforgettable true co-op moments with your partner.

In Dominions 6 you take control of a powerful being that rules a nation and aspires to godhood. The type of Pretender Gods can vary from magically powerful arch mages to old dragons or an enormous tree. Dominions is a deep 4x turn based strategy game with a very large variety of spells and units.

Crash over and over until you master the mountain in the snowy followup to Lonely Mountains: Downhill. Now also including 2-8 person crossplatform multiplayer - work your way down the slopes together as a group, or risk it all in a breakneck race to the base!

Join Postmouse on their very first journey to deliver mail in a treacherous world unfit for a tiny mouse. Explore the ruins, meet charming characters and solve puzzles on your way through an abandoned mansion in this free, student-made adventure - all in one small mouse-sized package! 

No packages? No problem! Break in. Scrap everything. Deliver... A chaotic online co-op game for up to 5 players (or 15 if you really want to)!

Casual physics puzzle

Lead a medieval restaurant with a team of rats like you! Cook the food, throw it at the guests, wipe the drinks under the skeletons! Become a legendary rat chef, proving to orcs and vampires that the most delicious bloody meat is served in your restaurant!

Sacrifice is the acclaimed real-time strategy game that focuses on combat instead of resource gathering. The only two resources you'll need to worry about are mana and souls. Need more units? Capture the souls of your enemy. Cast spells of awesome power.