RPG · Adventure · made with GPT

Valthera

Explore a fantasy world, fight bosses, gather resources and craft gear with other players.

Plays in your browser Phone friendly Online multiplayer 2026 Vibe Coding Game Jam: rank 231 of 945
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About Valthera

Valthera is a free 2D multiplayer RPG set in a fantasy world. You explore the map, fight bosses, gather resources, and craft items, building up your character over time while sharing the world with other adventurers online.

It comes, the creator says, from a long-held passion for AI and a dream of making a game, and they built it with Codex. It placed 231st of 945 in Vibe Jam 2026, and it also runs on phones, so the world is there away from a desktop too.

The loops are familiar from MMOs, pressed into 2D: gathering feeds crafting, crafting leads to stronger equipment, and bosses give you a reason to use it. Other players are part of the design, not an extra.

How it was made

Most of the code was written by AI. Source: Vibe Jam 2026 submission form.

Evidence: the creator's own account.

AI provider
OpenAI
AI tools
Codex
Genre
RPG, Adventure
Players
Online multiplayer
Make one like itCodex game development: a practical guide

Questions about Valthera

Is Valthera free to play?

Yes. Valthera runs in your web browser at no cost, with no download or account needed.

Which AI was used to make Valthera?

Valthera was made with Codex and GPT. Most of the code was written by AI, according to the Vibe Jam 2026 submission form.

Can I play Valthera on my phone?

Yes. Valthera supports mobile browsers.

Who made Valthera?

Valthera was made by MunliteARG. See their profile on GamesByAI for their other games.

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