Croteam was initially started as a "garage game development" in 1993. From there, it has been continually involved in game development.
In period 1993-1995, Croteam developed three games for different game platforms: Football Glory (PC, Amiga), 5-A-Side Soccer (Amiga) and Save The Earth (Amiga 4000). With the release of Football Glory, Croteam has made a strong presence in the European market (mainly UK and Germany). Since 1995, Croteam works exclusively for the PC platform.
In 2001, Croteam finished two products: Serious Sam (First Person Shooter) and the Serious Engine (3D Engine powering Serious Sam with powerful Serious Tools - Serious Editor and Serious Modeler). Serious Sam and the Serious Engine are two products that helped Croteam in establishing strong presence in worldwide markets and creating different relationships with developers and publishers alike.
In mid-2003, Croteam began development on Serious Sam II, which used their latest game engine at the time - Serious Engine 2. It allowed support for advanced refraction effects, high-resolution textures, high-dynamic range lighting, and light bloom effects. It was released in October 2005.
Two years later, development officially started on Serious Sam 3. In late 2009 and early 2010, HD remakes of The First Encounter and The Second Encounter were released via Steam, running on the superior Serious Engine 3, with updated models, textures, and 16-player co-op. Devolver Digital started a humorous advertisement campaign to promote their releases.
The Serious engine was designed to render several items at the same time. However, There was a trade-off. The Serious engine can only render in 2.5 Dimensions, similar to Doom I & II
and Duke Nukem 3D