The Earthrise Engine is the engine developed by Masthead Studios for their MMO, Earthrise. While the game only got a 6/10 Average, the engine was praised for its High Quality Graphics and gameplay. While there were many bugs in Earthrise V.1, updates and modules are expected to fix this for Earthrise V.2.
Following Masthead's agreement to develop Fallout Online for and with Interplay, it was announced the game would use the Earthrise Engine. However, due to Fallout's different gameplay than Earthrise, the two games would only be similar in graphics and not gameplay. This was one of the most frequently asked questions by both Earthrise and Fallout Fans.