Co-op (local)
=============

Alien Blaster (1-2 players)
Balazar Brothers (1-2 players)
Battle Tanks (1-2 players)
Dodgin' Diamond 2 (1-2 players)
I Have No Tomatoes [Bomberman] (1-2 players)
Njam [Pac-man] (1-2 players)
OpenClonk (1-2 players)
Overgod (1-2 players)
Slappa (1-2 players)
Pang Zero [Buster Bros] (1-6 players)
The Bub's Brothers [Bubble Bobble] (1-10 players)


Co-op (online)
==============

Balazar Brothers (2 players)
Battle Tanks (2-4 players)
The Bub's Brothers [Bubble Bobble] (2-10 players)
OpenClonk (2-? players)


Versus (local)
==============

Angry Drunken Dwarves [Puyo Puyo] (1-2 players)
Biniax-2 (1-2 players)
Billard-GL [Pool] (1-2 players)
Blobby Volley 2 (1-2 players)
Block Attack [Tetris Attack] (1-2 players)
Bomberclone [Bomberman] (1-2 players)
Do'SSi Zo'la (1-2 players)
FloboPuyo [Puyo Puyo] (1-2 players)
FooBillard++ [Pool] (1-2 players)
Frozen-Bubble [Puzzle Bobble] (1-2 players)
Granatier [Bomberman] (1-2 players)
Heroes (1-2 players)
KSnakeDuel [Tron] (1-2 players)
KSpaceDuel [Spacewar] (1-2 players)
lierolibre (1-2 players)
Mad Bomber (1-2 players)
M.A.R.S. (1-2 players)
Njam [Pac-man] (1-2 players)
OpenClonk (1-2 players)
Pacewar (1-2 players)
The Ur-Quan Masters [Star Control II] (1-2 players)
Tuxfootball [Soccer] (1-2 players)
LTris [Tetris] (1-3 players)
Armagetron Advanced (1-4 players)
Biloba (1-4 players)
Gish (1-4 players)
glTron (1-4 players)
GNUjump [Xjump] (1-4 players)
Jump'n'Bump (1-4 players)
Luola (2-4 players)
MiceAmaze (1-4 players)
Pink Pony (1-4 players)
SuperTuxKart [Mario Kart] (1-4 players)
Ksirk [Risk] (1-6 players)
Liquid War (1-6 players)
Nibbles (1-6 players)
Tali [Yahtzee] (1-6 players)
Balder2D (1-8 players)
Battle for Wesnoth (1-9 players)
Atomic Tanks [Scorched Earth] (1-10 players)
Kolf [Golf] (1-10 players)
Konquest (1-10 players)
Hedgewars [Worms] (1-48 players)
Feeding Frenzy (2-100 players)


Versus (online)
===============

Between (2 players)
Blobby Volley (2 players)
Block Attack [Tetris Attack] (2 players)
Naval Battle [Battleship] (2 players)
Sleep Is Death (2 players)
The Ur-Quan Masters [Star Control] (2 players)
Armagetron Advanced (2-4 players)
Biloba (2-4 players)
Doom (2-4(?) players)
Frozen-Bubble [Puzzle Bobble] (2-4 players)
GtkAtlantic [Monopoly] (2-4 players)
Jump'n'Bump (2-4 players)
Njam [Pac-man] (2-4 players)
Ksirk [Risk] (2-6 players)
Battle Tanks (2-8 players)
MegaGlest [Glest] (2-8 players)
Pioneers (2-8 players)
Battle for Wesnoth (2-9 players)
Warzone 2100 (2-10 players)
Bomberclone [Bomberman] (2-16 players)
Teeworlds (2-16 players)
FreeOrion [Master of Orion] (2-20 players)
Hedgewars [Worms] (2-48 players)
OpenArena [Quake III] (2-64 players)
Xonotic (2-64 players)
Feeding Frenzy (2-100 players)
Freeciv [Civilization] (2-126 players)
OpenClonk (2-? players)


Turn-taking
===========

Defendguin [Defender] (1-2 players)
LBreakout 2 [Arkanoid] (1-4 players)


Massively Multiplayer
=====================

Evol Online (ManaPlus)
Land of Fire (ManaPlus)
Minetest [Minecraft]
The Mana World
Stendhal