Urzeit Arena

Cinevva's analyzer read this game's design doc and its source, then wrote the brief below. "Make your own" hands it to the game creator as your opening message, so you start from a real spec rather than a one-line idea.

Create a playable 3D browser game titled “Urzeit Arena” with a German-language interface and two modes: a dinosaur collection lobby and a top-down arena battle.

Visual style and camera: use a stylized low-poly/cartoon prehistoric environment. Render a square grass-and-earth arena from a high, slightly angled top-down perspective with soft shadows, green grass, brown exposed earth, a broad gold circular boundary ring, fog, and trees and rocks scattered around the outside. The arena should be about 30–34 world units wide. Use a fixed perspective camera looking toward the arena center, roughly at position (0,25,18), with the dinosaur visible from above/behind. Place roughly 12 stylized trees around the perimeter and 18 rocks in a loose outer ring. Use warm sunlight and a pale green outdoor background.

Lobby UI: overlay the 3D scene with a dark translucent green HUD using rounded panels, thin gold borders, warm cream/gold headings, and subtle shadow/blur. At the top, show the brand “URZEIT ARENA” on the left. On the right show a yellow coin icon and “1200”, plus a gold “Eier-Shop” button. The lobby occupies most of the screen below the top bar and has three rounded panels in a responsive 3-column layout (on small screens, rearrange to two columns/rows):
- Left panel heading “Sammlung · 50 Arten”, explanatory text “Wähle deinen Champion. Seltenere Saurier sind schwerer aus Eiern zu ziehen.”, and a two-column collection list. Show 50 dinosaur names. Only Tyrannosaurus Rex is unlocked, marked with a dinosaur icon; the other entries are dimmed and marked with lock icons. Include the rarity labels: the first five are “GEWÖHNLICH”, the next group “SELTEN”, then “EPISCH”, “MYTHISCH”, and the remaining high-tier entries “LEGENDÄR”. The full names can include: Tyrannosaurus Rex, Velociraptor, Triceratops, Stegosaurus, Spinosaurus, Brachiosaurus, Ankylosaurus, Pteranodon, Parasaurolophus, Diplodocus, Allosaurus, Carnotaurus, Iguanodon, Baryonyx, Pachycephalosaurus, Therizinosaurus, Deinocheirus, Archaeopteryx, Mosasaurus, Liopleurodon, Giganotosaurus, Utahraptor, Suchomimus, Megalosaurus, Ceratosaurus, Compsognathus, Edmontosaurus, Apatosaurus, Kentrosaurus, Ouranosaurus, Dilophosaurus, Oviraptor, Microraptor, Styracosaurus, Torosaurus, Saurolophus, Corythosaurus, Maiasaura, Protoceratops, Titanoboa, Quetzalcoatlus, Sarcosuchus, Dreadnoughtus, Amargasaurus, Dracorex, Mononykus, Plateosaurus, Coelophysis, Eoraptor, Frost Rex.
- Center panel: prominently display “Tyrannosaurus Rex” in large cream text with a brown offset/shadow, show the 3D T-Rex in the scene behind/around the panel, and put the caption “Dein aktueller Saurier · bereit für die Arena” below it.
- Right panel heading “Eier-Shop”. Show three purchase buttons and descriptions: “Bronze-Ei · häufige Arten” with “🥚 Bronze-Ei · 100” in orange, “Gold-Ei · seltene Arten” with “🥚 Gold-Ei · 300” in gold, and “Meteor-Ei · epische Arten” with “☄️ Meteor-Ei · 700”. Clicking an egg displays a result message saying that an egg of the corresponding rarity was opened, but for this prototype the active T-Rex remains active. The top “Eier-Shop” button should scroll the page/UI toward the egg shop.
- Put a large gold button centered near the bottom reading “⚔ Arena betreten”.

Player and arena: load/use a stylized dinosaur model resembling a Tyrannosaurus Rex. In the lobby it is the selected active champion. In battle, place the player T-Rex at the center, scale it larger than the enemies, and give it idle, walk/run, punch/bite-style attack, and death animations when available. Movement is top-down with a movement control system: keyboard/mouse or touch-compatible controls should move the player around the arena at speed 7, with no jumping or gravity. The player stays at ground level. When entering the arena, hide the lobby and show an arena status panel at upper left with “Tyrannosaurus Rex”, a green health bar, and “100 / 100”. Show a “← Lobby” button at upper right and a bottom-right instruction panel: “Linksklick oder TAP: Biss-Angriff”.

Enemies and combat: spawn exactly three enemy dinosaur models around the player at approximately (6,-4), (-7,-5), and (4,7), each smaller than the player. They idle in place rather than pathfinding or chasing. Give them health values of 70, 85, and 100. On left mouse click or tap, if the player is alive and the attack cooldown is zero, play the player attack animation, set a 0.75-second cooldown, and damage every living enemy within 4.2 world units for 35 HP. Flash/scale-hit enemies briefly. When an enemy reaches zero HP, play its death animation if available and hide it after about one second. Enemies within 4.5 units can occasionally damage the player: apply 8 damage with a low random interval chance. Clamp player health at zero. At zero HP, play the T-Rex death animation and replace the attack hint with “Dein T-Rex ist besiegt · Lobby für Neustart”. The lobby button resets the mode, restores player health to 100, places the player at center, makes all three enemies visible and alive, and restores their original HP. Entering the arena likewise resets player HP to 100.

Implementation behavior: use a simple mode switch between lobby and arena; the UI must be interactive, and the arena should be genuinely playable with movement and attacks. Keep the collection mostly presentation-only: the locked species do not become selectable, and opening eggs does not change the active T-Rex in this prototype. Maintain the visible German text, dark green glass-like panels, gold typography and buttons, orange egg button, green health bar, and prehistoric low-poly setting shown in the reference.