Sparkster: Rocket Knight Adventures 2 vs The Adventures of Rad Gravity
Side-by-side comparison of features, pricing, ratings, and alternatives.

Sparkster returns in this sequel, delivering fast‑paced side‑scrolling action with upgraded rocket packs and new enemy types. Players dash, jump, and blast through vibrant stages while rescuing the kingdom from the Pig‑Mouth army.
The Adventures of Rad Gravity is a 1990 NES platformer developed by Interplay and published by Activision. Players guide the large‑headed hero Rad through eight bizarre planets, battling enemies with a light‑saber‑like weapon and solving gravity‑defying puzzles. The game is known for its comedic tone, sci‑fi setting, and the iconic reverse‑gravity level on Turvia where everything is upside down. Its retro pixel art and quirky storyline have made it a cult classic among retro gaming fans.
- Tight controls and responsive movement
- Diverse level design with hidden secrets
- Engaging co‑op mode
- Rich retro visuals and soundtrack
- Unique reverse‑gravity level design
- Charismatic, humorous protagonist
- Varied planetary environments keep gameplay fresh
- Tight controls typical of classic NES platformers
- Limited to single‑player campaign for most modes
- No online multiplayer support
- Original release hardware constraints affect modern compatibility
- Limited to single‑player mode
- Pixel art may feel dated to modern gamers
- Occasional hit‑box inaccuracies on enemies
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Juggle stars and save the Space Circus in a wild intergalactic adventure






