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Play Swamp Thing (US edition · English) Online
Swamp Thing
Play Swamp Thing online. Jump past danger, use punches and swamp moss, and explore transformations while opposing Dr. Arcane.
Browser play
Nintendo Entertainment System (NES) / Famicom — EmulatorJS controls
Default Player 1 keyboard mapping. Change keys in Controller Settings.
| Console button | Keyboard |
|---|---|
| ↑ / ↓ / ← / → | ↑ / ↓ / ← / → |
| A / B | Z / X |
| START / SELECT | Enter / V |
Open Controller Settings to configure your keyboard or gamepad. Touch controls are available on mobile.
How to Play Swamp Thing
Quick start
Press START to begin. Move with Left/Right and use A to jump; holding it longer gives a higher jump. Try B for punches, or moss projectiles once supplied. Watch your energy. At a suitable transformation object, use Up to change form and SELECT to return. Keep at least two energy ticks before transforming.
Controls
Left/Right walks; Down crouches. A jumps, with longer holds giving more height; keeping A held after a jump increases walking speed. A also shakes the tree form and advances text. B punches or throws swamp moss. Up activates transformations at suitable objects; SELECT restores Swamp Thing's normal form. START starts, pauses/resumes and skips movie sequences.
Swamp Thing — About this game
Swamp Thing follows a transformed Alec Holland as he tries to stop Dr. Anton Arcane from exploiting a bio-restorative formula. The NES adventure combines platform jumping with close-range punches and collected swamp-moss projectiles. Energy-restoring beakers and other pickups help you survive encounters with Arcane's forces. Transformations add another layer to exploration: suitable objects let Swamp Thing take other forms, reaching places or supplies that ordinary movement cannot. Changing form costs energy, while becoming a flower can restore it. You need to judge jumps, manage your remaining energy and make use of the environment rather than simply attack every threat.
Cheats
No cheats have been added for this edition.
Player verification and sources
Browser play was reviewed before this edition was published in the catalogue. The date below is the catalogue publication date, not the game’s original release date.
- Browser test and catalogue publication date
- Browsers and devices
- PC: Chrome, Edge and Firefox. Mobile: Chrome on Android and Safari on iPhone and iPad.
- Player engine and core
- EmulatorJS 4.3.0-pre · nes
- Tested by
- rwEmulator
Sources and editorial basis
rwEmulator reviews edition metadata, release information, game manuals and first-hand browser-play notes. Available manuals are linked below; the editorial policy explains how facts are checked and corrections are handled.