Four-direction controls
W
A S D
W is up, A left, S down, and D right. RETURN confirms or performs the main action. Some games use F or X for secondary actions. X waits in CHRONO BREACH and ABYSS SIGNAL.
Eight directions
NIGHT SWARM and RELIC DIVE use this layout:
Q W E
A D
Z X C
Q/E/Z/C are diagonals and X is down. S is not used for movement. In RELIC DIVE, S waits one turn and W/X selects menu entries. A one-button pad also supports diagonal input.
Start, restart, and quit
Controls and scoring rules are collected on title and help screens. During play, watch the board, your selection, remaining health or score, and upcoming events. Hits, failure reasons, and earned points appear briefly where they happen.
RETURN or the pad button starts from the title. Each game guide explains how to open help and use secondary actions. RELIC DIVE selects difficulty with W/X at the title and opens HELP from the RETURN menu during play. SPACE goes back. CTRL+C quits to BASIC.
Restarting opens REALLY RESET? with NO initially selected. Choose with A/D (pad left/right), confirm with RETURN (button), or cancel with SPACE. Play pauses during confirmation. Actions that discard a partly played board, such as returning to stage selection, also ask first. A single-step undo, LOOP TEN's rewind, and RELIC DIVE's suspend/resume are normal actions. The emulator's Reset button also asks before resetting.
The main game actions work with a one-button pad. Use the keyboard for help, restarting at an arbitrary time, and returning to BASIC.
FROST STEPS, MAGNET VAULT, GLYPH SHIFT, and GRAVITY WELL have 40 stages with star ratings. F opens stage selection, WASD selects, RETURN starts, and SPACE returns to the title. All 40 stages are available from the start. On a clear screen, SPACE retries the same stage and RETURN advances. Write down PW on the title or stage-selection screen before quitting; enter it through X next time to restore the stage number and all 40 best ratings.
Input during introductions, motion, and results
The introduction includes sound and a centered GAME START message. Some games reveal terrain, goals, your character, and enemies in sequence. Wait until it finishes before acting. Timers do not run during the introduction.
Movement, stone flips, hits, defeats, and stage results include brief pauses before the next input. Damaged characters flash; failure shows its cause and plays a jingle. Release and press again after the result finishes. Some games continue accepting direction or switch commands while trains or enemies move automatically.
The motion and sound showcase (Japanese) shows stone flipping and destruction effects.
Launch a game from the guide
- Open the JR-100 Web Emulator and set up your own BASIC ROM.
- Choose Play this game from a game guide.
- If that browser has the ROM saved, the game boots automatically to its title. No program-file selection or USR command is needed.
If you remove the ROM or use a different browser, set it up again. The game downloads do not include a BASIC ROM.
Sound starts automatically if the browser allows it. Otherwise, a notice above the game asks you to click to enable audio. Click the game screen, notice, or Enable sound, tap the screen, or press a key to activate sound and dismiss the notice. A gamepad alone may not unlock browser audio. Your saved mute preference is preserved.