LUMEN GARDEN（星光庭園） is a lane tower-defense game inspired by the classics: plant defenders on a 5×9 starlit lawn, harvest light orbs, and hold the line against escalating waves of the Shadow Tribe — across five rule-twisting campaign levels, or in an endless roguelike mode where you stack perks between boss waves.
The entire game is hand-built with the raw web platform — vanilla JavaScript, Canvas rendering and the Web Audio API. There are no frameworks, no sprite sheets and no audio files (even the PWA icons are canvas-generated); install it to your phone's home screen and it runs fully offline.
Features
- Five Campaign Levels: classic night, a moonless economy challenge with no falling orbs, a boulder-strewn field that blocks planting, a gale night of sprinters and flyers, and a twin-boss finale — each rated 1–3 stars by how many starlight bombs you keep
- Endless Roguelike Mode: formula-generated waves that scale until you break, with a pick-one-of-three perk draft every five waves (fire rate, damage, orb value, cooldowns and more — all stackable), best wave saved locally
- Seven Defenders: light-producing mushrooms, thorn snipers, slowing frost lotuses, splash-damage blaze flowers, 500-HP boulder walls, lane-piercing bamboo lances and cheap one-shot starfire mines
- Six Enemies: shamblers, sprinters, armored brutes, bats that fly over your walls, splitters that burst into two on death, and the Shadow Monarch boss — who summons minions and crushes walls for 4× damage
- Unit Upgrades: tap a placed unit to level it up to Lv3 — more damage, faster production, full heal on upgrade
- Achievements & Stars: 8 achievements and per-level star ratings, all persisted in localStorage
- Synthesized Audio: 11 sound effects generated in real time by Web Audio oscillators, with a mute toggle
- Installable PWA: add to home screen on iOS/Android, plays fully offline via service-worker caching
- Bot-Tested Balance: an automated player simulated full endless runs to calibrate the difficulty curve
Controls
Click a card, then click a lawn tile to plant; click a placed unit to upgrade it. Click falling light orbs to collect energy. P to pause, speaker icon to toggle sound, shovel to remove a unit for a 50% refund.
