|1990 Super Bros. 4|
|Hack of|| Super Mario Bros. 2 (FDS) |
Super Mario Bros.: The Lost Levels
1990 Super Bros. 4 is a hack of the Japanese Super Mario Bros. 2 (aka Lost Levels outside of Japan).
Aside from an edited title screen, some of the graphics were changed; the graphics were reused from Super Mario Bros. 3, although some sprites are custom. Some of the power-ups have a different use: a Super Mushroom turns Mario into Fire Mario, and a Starman allows Mario to swim in the air.
- 921001 is written on the PCB, which likely means its release date was around October 1992.