Games · 2026
Katsuya's Revenge
Katsuya, a banished Samurai, dons a hidden persona as a ninja to avenge the death of his sensei by the corrupted Samurai Kapudo. The AP Computer Science original, thoroughly remastered in 2026 — four levels, story cutscenes, a katana, and a three-phase boss. Playable right here.
Controls
What the remaster adds
The full story, playable
Four levels threaded with illustrated between-level cutscenes, an ending, and credits — the arc the original only hinted at.
A katana in your other hand
A new melee mechanic alongside the shurikens: an 18-tick slash that chains swing into swing when you keep the pressure on.
A three-phase warlord
The final boss reads like a boss should — wind-up tells, slash arcs, and landing shockwaves that come faster at half health and faster again at a quarter.
A dojo arena with depth
A gated arena fight with parallax layers, plus checkpoint lanterns — light one and deaths return you there instead of the level start.
Modern game feel
A real pause menu, a death screen with restart, per-level music, and a title screen — the connective tissue the AP CS version never had time for.
How it's built
The remaster is a hand-written HTML5 canvas port of the original Java Swing game — the gameplay logic mirrors GamePanel.java and Enemy.java move for move, so it still plays like the game we built in class, just finished. Player sprite sheets are generated by tooling from the Java project, cutscene frames ship as data the page loads up front, and the level music is transcoded for the web. No engine, no framework: one canvas, one game loop, ~1,800 lines.