WarCraft II: Tides of Darkness
Warcraft II: Tides of Darkness, released in December 1995, expanded on its predecessor with higher-resolution graphics, multiplayer support for up to eight players, and armies that fought on land, sea, and air.
As for the first game, I continued as Producer and Lead Programmer but got a lot of additional help with production and programming due to the scope of the project.
The game was markedly better in every way: high-res 640x480 resolution (vs. 320x200); eight player multiplayer (instead of just two); larger selection limit (nine units instead of four); more theatres for combat with land, sea, and air units; more resource types with the addition of oil to the original gold and wood; and the game shipped with a map editor so players could build their own missions.
The game shipped only one year after Warcraft I — a pace that seems almost unimaginable today.