2D

Autumn’s Journey
by Apple Cider
1.0
(16 May 2014)
The world of Ishtera is populated by two races: dragonkind, who have lived there for eons, and the heavenkind, who have recently appeared.
Genre: Text Based / Visual Novel 
Mutant Gangland
0.2.8 Alpha 1Mutant Gangland is a fast paced turn based strategy game for those with no need for micro management.
Genre: Turn-based, Strategy 
KeeperRL
Alpha21 (25 Feb 2017)KeeperRL is an opensource dungeon simulation game inspired by Dungeon Keeper and Dwarf Fortress.
Genre: Construction and management, Roguelike, Strategy, Adventure, Role-playing, Simulation 
Hero Academy
(10 Aug 2012)Hero Academy is a two-player turn-based tactics video game created by the developer Robot Entertainment, known for their previous series...
Genre: Turn-based, Strategy 
Evol Online
frequently updated (15 Mar 2016)Escape into the world of Aemil! Join a guild and make new friends that will help you become stronger and a better adventurer! Explore...
Genre: MMO, Role-playing 
Seasons Of The Wolf
by Winterwolves
The game starts in Ninim, a village in the Northern region of Aravorn (the fantasy world where Loren and other games of mine take place).
Genre: Text Based / Visual Novel, Role-playing ScummVM
1.8 (4 Mar 2016)ScummVM is a program which allows you to run certain classic graphical point-and-click adventure games, provided you already have their data files.

The Journeyman Project: Pegasus Prime
DVD Version (10 Mar 2014)The Journeyman Project: Pegasus Prime is a masterful retelling of the first installment of the highly acclaimed Journeyman Project...
Genre: Point & Click, Puzzle, Adventure ManaPlus
1.6.3.26 (26 Mar 2016)ManaPlus is a free OpenSource 2D MMORPG client for Evol Online, The mana world and similar servers.
Adventure Game Studio
GitAGS (Adventure Game Studio) is a game engine primarily used to create graphic adventure games.

Element4l
by i-illusions
1.2
(9 Mar 2014)
Element4l is a immersive and experimental platform game, with a strong focus on flow and smooth gameplay, wrapped in an exceptional...
Genre: Arcade, Platform