Source Engine

Counter-Strike: Source

Play the popular game using the Source game engine

… a new level of game play, give Counter-Strike: Source a try. The original game let you pick between …

PRO: The best team experience
CON: Not compatible with non-official maps
Vote: 6.4/10 (1780 votes) Platform: Windows

Cheat Engine 6.8.1

Open-source title to help gamers learn how to dominate their favorite titles

Engine is an open source program that lets you share information with other players, and pick up tips …

PRO: Includes tutorial
CON: Can't use for online game
Vote: 7.2/10 (11083 votes) Platform: Windows

Source Filmmaker 0.9.5.10

Movie-making software developed and used by Valve

… the Source Filmmaker software is a fantastic way by which you can create and animate your film projects …

PRO: Imports levels and characters from your favorite Valve games
CON: Requires good graphics card
Vote: 6.7/10 (454 votes) Platform: Windows

Cheat Engine 6.4

Tool used to create mods of computer games

… be shared between users. Because Cheat Engine is open source software, there is a large community of people …

PRO: Includes tutorial
CON: Can't use for online game
Vote: 6.6/10 (11 votes) Platform: Windows

VCMI 0.97

VCMI is an open source rewrite of the HoMM3 engine

Vote: 4.0/5 (103 votes) Platform: Android

GoldenEye: Source (Half-Life 2 Mod) 5.0

PC version of the popular N64 console

PRO: The most polished update they have ever produced
CON: Finding good servers is sometimes tricky
Vote: 8.1/10 (2 votes) Platform: Windows

Wallpaper Engine 2016

Make you screen come alive with these exciting images that you can put up with easeĀ 

PRO: Very stable application
CON: Certain features can be a bit tricky to master
Vote: 4.0/10 (2 votes) Platform: Windows

GGDroid Engine 1.2.5

Play Flash-based games for free on any smartphone with absolutely no advertisements

Platform: Android

Engine-Codes.com 2.0

Stop wondering what the blinking engine light means and find out for sure

Platform: Android

Chess Engines 1.9

Play chess against an engine!

Vote: 4.0/5 (87 votes) Platform: Android