HYPER MARIO BROS. 5 (First Half / 後編)

Description

Medium-difficulty vanilla hack... but with its own unique twist that makes the Hyper Mario Bros. series stands out on its own with its subtle behavioural changes.
Instant-death spikes, stars that warp you to the next sub-areas, bullet bills that you can stomp super high from, and so on. Mild save states may be expected, and L-shaped wall clips may be permitted in areas such as needing to get 1UP mushrooms or warp zone accessibility. 
This is the first half that shows W1~W4.