More browsing paths
Play Luidius (Hack · 1.0 · English) Online
Luidius
Play Luidius online, a Gradius NES graphics hack with a Luigi-headed ship and Mario-style enemies. Collect capsules, build the power meter, and survive every stage.
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 Luidius
Quick start
Use SELECT at the title screen to choose one or two players, then press START. Move continuously with the D-pad and hold or tap A to clear enemy waves before they surround the ship. Orange power capsules advance the highlight along the upgrade meter; press B only when the highlight reaches the upgrade you actually need. Begin with one or two Speed Ups, then prioritize Missiles and either Double or Laser before adding Options and a Shield. Avoid collecting capsules blindly, because the meter wraps and activating the wrong slot can delay a vital defense. The Luigi and Mario-themed graphics do not change the original stage hazards, so learn safe routes around terrain and destroy boss cores only after they become vulnerable.
Controls
D-pad: maneuver the Luigi-themed craft in all directions. A: fire the equipped weapons. B: activate the currently highlighted power-up on the meter; upgraded missiles, Double, or Laser continue to fire through the normal weapon input. SELECT: choose one-player or alternating two-player mode on the title screen; no standard in-stage function is documented. START: begin the selected game and pause or resume during play.
Luidius — About this game
Luidius is KZ-S's version 1.0 graphics hack for the NES release of Gradius, published in 1999. It replaces the Vic Viper's presentation with a craft built around Luigi's head and redraws enemies with motifs drawn from the Mario series, turning Konami's space campaign into a playful crossover-style reskin. The documented project scope is visual rather than a rules overhaul, so the underlying challenge remains Gradius: steer through automatically scrolling stages, destroy enemy formations, collect power capsules, and press the power-up button when the desired slot on the upgrade meter is lit. Speed upgrades, missiles, Double or Laser, Options, and shields must be chosen in a useful order, because losing a craft removes accumulated equipment. Two-player mode alternates turns rather than placing both ships on screen together. The available hack record does not prove a unique source-ROM region or revision, so this entry describes only the verified graphics changes and the shared NES gameplay.
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.