Beacon Tower

Inspiration

In most tower defense games, the game decides when things get hard — a wave timer ticks, difficulty spikes, and you react. I wanted to hand that lever to the player. Beaconfall started from one question: what if expanding your safe zone was the very thing that created your next threat?

That turned greed into the difficulty dial. It blends the push-your-luck tension of Balatro, the "just one more run" pull of Vampire Survivors, and the deep upgrade paths of Bloons TD 6 and Kingdom Rush — fused into a single decision you make over and over:

How much darkness are you willing to invite inside your walls for the chance to survive just a little longer?

What it is

A tower defense where you don't build mazes — you grow.

You are the last Warden of a fallen kingdom, and the Beacon is humanity's final sanctuary. Upgrading the Beacon pushes its protective barrier outward into the miasma and reveals a hidden monster portal. Then comes the choice: light it or leave it. Lighting a portal opens a new enemy lane and spikes your income — but roughly doubles the pressure. Up to five portals. Every run ends when the Beacon falls, banking Legacy Embers toward a permanent Warden's Legacy upgrade tree, so failure is never punishment — it's progress.

The result is player-controlled difficulty: you're always one greedy decision away from more gold, and one greedy decision away from collapse.

How I built it

This submission is the full design and concept package for Beaconfall, built across four pillars:

• Game Design Document — the core loop, five towers and five enemies with hard-counter identities, the Legacy meta-progression, and the retention philosophy.
• Player Journey Map — the emotional arc of the first 15 minutes (wonder → power → greed → disaster → understanding → mastery), including a guided first fall that teaches the greed lesson before handing the player the wheel.
• Visual Concept Package — one high-contrast isometric dark-fantasy identity (warm Beacon gold vs. eldritch purple corruption), with concept sheets for every unit, a mid-run gameplay mockup, a mobile-first UI built around thumb-reach zones, and diagrams of the greed loop.
• Production Plan — an 8-week MVP scoped to the absolute core loop first, with explicit playtest signals (target: 2–3 portal activations per run) and pivot plans.

The intended build is a Unity mobile title using object pooling for the simultaneous enemy lanes, a deterministic wave-escalation counter, and an offline gold + save/load layer for fragmented mobile sessions. All concept art was iterated toward one consistent style, so every piece maps to the same world and the same central question.

Challenges I ran into

The hardest problem was making greed feel like opportunity, not self-sabotage. Early on, lighting a portal read as a mistake. The fix was design-wide: strong reward feedback the instant a portal lights, clear before/after framing, UI language that frames risk as glory, and a measurable playtest signal — if players never light a second portal, the reward is too low.

The other big challenge was communicating a mechanic no existing tower defense has. A spatial, ongoing push-your-luck loop isn't obvious from a screenshot, so the Player Journey Map and the greed-loop diagrams exist specifically to make it legible. Fitting a busy multi-lane board into a comfortable one-thumb mobile layout — and keeping names, systems, and art identity perfectly consistent across four documents — took real discipline.

What I learned

Player-driven difficulty is a philosophy, not a feature — it changes how every system is tuned. Income, escalation, and rewards all have to make greed tempting and dangerous at the same time. I also learned how much mapping the emotional journey (not just the mechanics) shapes onboarding, and how a single palette and silhouette language is what makes a pile of concepts feel like one real game.

What's next for Beaconfall

Building the 8-week MVP and playtesting the greed economy, then layering on V2: new Beacon biomes, boss portals, daily-challenge leaderboards, asynchronous social ghosts of friends' best runs, a prestige layer, and additional towers and synergies.

Built With

• horizon
• horizonworlds
• meta