In reality, these collections often use "bank switching" technology to cram multiple programs into one ROM. While the label promises 300 unique experiences, many of these "games" are actually:
: Classic games where sprites have been swapped—for instance, replacing Mario with a different character. 300 in 1 nes rom
: Variations of Super Mario Bros. that start you on World 3-1 or with infinite lives. In reality, these collections often use "bank switching"