Made with Nano Banana 2 Lite · CC0 · 6 Oct 2026

Hand-drawn

Generated from: a scene from a small video game about: Create a mobile game called "Castle Siege." The game is a simple but highly replayable castle-building and wave-defense game designed for portrait mobile screens. CORE GAMEPLAY: The player owns a castle in the center of a small medieval map. Before each wave, the player has a preparation phase where they can: * Build walls. * Place defensive towers. * Place gates. * Upgrade the castle. * Place traps. * Repair damaged structures. * Rearrange their defenses. Then the player presses a large "START WAVE" button. After the wave starts: * AI enemies spawn from multiple locations around the edges of the map. * Enemies intelligently move toward the player's castle. * Enemies attack walls, gates, towers, and eventually the castle. * Defensive towers automatically attack enemies within range. * The player must survive the wave. * After all enemies are defeated, the wave ends. * The player receives coins/resources. * The next preparation phase begins. The main objective is to survive as many waves as possible. CASTLE: Create a visually appealing medieval castle with: * A central keep. * Outer walls. * At least one gate. * Towers. * A castle health bar. The player should be able to expand the castle by constructing additional walls and defensive structures. BUILDING: Create a simple building system that works well with touch controls. The player taps an empty build location and sees available structures. Initial structures: * Wall * Archer Tower * Cannon Tower * Gate * Spike Trap Each structure should have: * Cost * Health * Upgrade level * Attack/range information where appropriate. COMBAT: Create basic enemy AI. Initial enemies: 1. Grunt * Slow. * Moderate health. * Attacks walls. 2. Runner * Fast. * Low health. * Attempts to reach the castle quickly. 3. Brute * Slow. * Very high health. * Deals heavy damage to walls. Enemies should choose reasonable paths toward the castle and attack obstacles blocking their route. WAVES: Wave 1 should be very easy. Gradually increase: * Number of enemies. * Enemy health. * Enemy speed. * Enemy damage. * Number of enemy types. Every 5 waves should feel noticeably more difficult. Make wave 10 a mini-boss wave. UI: Display: * Current wave. * Castle health. * Available coins/resources. * Current build mode. * START WAVE button. * Pause button. During the preparation phase clearly show that the player is safe and has time to build. During combat, make the action visually exciting but easy to understand. IMPORTANT: Do not add complicated menus, multiplayer, story, or advanced systems yet. Focus on making the basic loop extremely fun: BUILD → START WAVE → DEFEND → EARN REWARDS → UPGRADE → BUILD MORE → HARDER WAVE. Make the game responsive and optimized for mobile devices., as an in-game screenshot in a hand-drawn ink and watercolour style. Palette: paper #f2e8cf, ink #283618, player tomato #bc4749, threat plum #6d597a, accent leaf #a7c957. Everything is original: never draw or resemble characters, places or logos from existing games, films or brands (no red-capped plumbers, no famous mascots), even when the idea names one. Keep the pictures honest: they promise what a small first version of this game, made in a game engine in a few days, can look like. Simple readable shapes, clear silhouettes, few flat materials, the in-game camera view. Never film stills, photoreal renders, AAA key art, detailed textures, cinematic lighting, or anything that looks like a big-studio game. No text, UI, HUD, logos or editor screens inside any image.