World 6-4 (Super Mario Bros.)
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The player starts the level on an elevated area with stairs heading downwards, ending at a pit of lava. Afterward is a platform surrounded by Fire-Bars and Podoboos, and with a ? Block containing a power-up above it. After a corridor of Fire-Bars on the ceiling, there is a room with more Fire-Bars placed on both the ceiling and the floor. Next is a room containing several Hidden Blocks before the bridge with the fake Bowser, which has a Podoboo jumping up from below and a horizontally moving lift above. The fake Bowser also starts throwing hammers.
Super Mario Bros. Deluxe challenges
In Super Mario Bros. Deluxe, the player can collect five Red Coins, find a hidden Yoshi Egg, and get a medal based on their score. The Yoshi Egg is found in a Hidden Block directly to the right of the first Fire-Bar, and the score to beat is 12000. The Red Coin locations are: