Crimson Warfare

Crimson Warfare is a browser-based Flash real-time strategy game developed and published by Mofunzone. It was released on Kongregate and Newgrounds and imported to Chinese flash game portals. Players act as battlefield commanders, collect funds, construct buildings, produce military units and destroy enemy headquarters. Build resource facilities, barracks, tank factories, airfields, defense turrets and research labs. Units include infantry, tanks and fighter jets, plus long-range missile strikes. It features campaign mode and custom battles with four difficulty settings. The gameplay simplifies classic RTS mechanics, focusing on resource management, base layout and army composition. Minimal monochrome pixel art and military sound effects. The original English Flash SWF can be played via Ruffle emulator, one of the notable early web-based RTS games in Flash era.

These games get the keyboard directly — the controls are whatever the game itself defines, usually in its own help or options screen. Some games show on-screen buttons on phones.