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Backyard Tower Defense: Game Design Doc

A Tower Defense game set in a Backyard world focused on Mech Piloting, but everything is in slow motion except you.

Core loop

Place and upgrade towers to survive waves, earn coins, then use them to unlock new towers built around mech piloting for harder maps.

Monetization plan (suggested prices)

• Premium Tower Bundle: R$99–299
• Bonus Starting Cash: R$199–449
• Tactical Map Access: R$99–349
• Wave Skip (1 match): R$15–35
• Coin Pack: R$25–199
• Starting Cash Boost (1 match): R$25–49

Retention hook

Endless mode with a global leaderboard, plus a visible progress bar toward the next big unlock.

Scope

Team project. Big enough that a small team, or a few months solo, is realistic. Cut hard to ship a first version. Why: mech piloting needs extra systems (saving, UI, and balancing).