The Best Gemini RPG Games You Can Play Right Now (2026)
A Gemini RPG is a roleplaying game that uses Google’s Gemini as its game master — usually a prompt you paste in, or a Gem that packages the prompt and its reference files so they load every session.
Gemini is an underrated model for roleplay: it follows structured instructions well, handles large knowledge files, and has a long context window. What it lacks is games. Very few finished RPGs are built for it, and most of what exists is a single prompt shared on Reddit or GitHub. This list only includes what we have played first-hand and scored against our published methodology, which is why it is short — and why it ends with building your own.
1. Burning Sun V2 — Best for a World That Pushes Back
Burning Sun V2 is a prompt shared publicly by No_Calligrapher_4557, and it has a real design thesis: “Do not let the character happen to the world, but rather, have the world happen to the character.” Gemini becomes “The Guide,” a hands-off DM that sets the scene and then steps back.
Its hook is what we call proto-reactivity. NPCs react to your deeds, and consequences ripple outward in small, believable ways — buy the merchant’s last apple before closing and that lands too. You also pick a storyteller temperament, wrathful, regular or peculiar, which colours the whole story; wrathful is the most interesting, because it gives the world a point of view. That idea earns Signature Design — 3.
The ceiling is clear. The NPCs react well and then wait — they rarely start anything themselves — and there is almost nothing mechanical underneath the storyteller, Mechanical Depth — 1. It is also world-agnostic, so each setting is only as deep as the cliché you ask for. Burning Sun V2 scores 2.1/5. Read the full review.
Runs on: Gemini
2. Gamekeeper RPG Prompt — Best for a Save-State You Can See
Gamekeeper RPG Prompt, shared on GitHub by Tiefseetauchner, is about as small as a prompt gets: the model becomes a “gamekeeper,” sets the scene, and prints a small JSON block — name, location, inventory — at the top of every reply. That one trick is genuinely useful. Because the state is written where you can see it, you can copy it out and paste it back in to resume a session later, which is why it holds Memory & Continuity — 3 against a 2 for the other bare prompts we have reviewed. Past that there is nothing: no combat, no checks, no world document. Gamekeeper RPG Prompt scores 2.1/5. Read the review.
Runs on: Gemini (works elsewhere)
3. Realm & Companion RPG Prompt — Best for Structured Turns
Realm & Companion RPG Prompt, shared on GitHub by Quantisan and tuned for Gemini, has the most shape of the bare prompts. Character creation is three picks — a realm, a character type and a companion creature — and every turn offers four options, deliberately mixing the expected with the unexpected. It tracks a loose moral alignment, so a villainous or morally grey run is on the table. That is the whole feature list: no reference document, no combat resolution, no world beyond what the conversation remembers. Realm & Companion RPG Prompt scores 1.9/5. Read the review.
Runs on: Gemini
At a Glance
| Pick and score | What it is | Best for |
|---|---|---|
| Burning Sun V2 2.1/5 | A world-agnostic simulation prompt | A world that reacts to you |
| Gamekeeper RPG Prompt 2.1/5 | A minimal prompt with a JSON tracker | A save-state you can paste back in |
| Realm & Companion RPG Prompt 1.9/5 | A minimal prompt with four-choice turns | Structure without setup |
Build Your Own Gemini Gem
For most players, the best Gemini RPG is the one you build. A Gem packages a system prompt and knowledge files into a reusable AI that keeps its instructions active in every conversation, so you define the game master, world, tone and rules once and every session starts from that foundation.
Setting one up takes a few minutes:
- Open Gemini and find Gems in the sidebar, then create a new Gem.
- Give it a name matching your game.
- Paste your game master prompt into the Instructions field.
- Upload any world notes or rules documents as knowledge files.
- Save the Gem, then select it to begin your first session.
The hard part is the prompt. If you would rather not write one from scratch, our free AI RPG Prompt Builder assembles a structured, paste-ready prompt in under a minute: choose Gemini, a genre, a tone, a focus and a campaign length, and paste the result into your Gem’s instructions. It runs entirely in your browser and calls no AI. Pick the long-campaign option and it adds save-state instructions that pair with our free Campaign Memory Tool — or borrow Gamekeeper’s visible JSON block for the same job.
For ready-made examples, Gemini RPG prompts shows what a complete prompt contains, and why AI campaigns fall apart at turn 50 covers the engineering decisions worth understanding before you build.
Made by Arcanum, not ranked: we also publish free prompt games of our own for Gemini, the Arcanum Originals. We never score or rank our own work, so they sit outside this list.
Why Gemini for Roleplay?
A fair question, given that Claude and ChatGPT have larger RPG communities. Three reasons.
Knowledge files. Gemini treats uploaded files as reference material it consults rather than background it has to hold in working memory. For a game with a large world document, that means more consistent lore over long sessions.
Context. Gemini’s long context window means a campaign runs longer before the model starts losing the thread of earlier events.
Instruction discipline. For prompts with many rules — agency protocols, status headers, resolution systems — Gemini tends to follow structured instructions reliably, which is what separates a game that holds together at turn 100 from one that has unravelled by turn 30.
None of this makes Gemini the best model for every player; Claude’s prose and ChatGPT’s ecosystem have their own strengths. For the full comparison, see ChatGPT vs Claude vs Gemini for roleplay and the Gemini RPG guide.
Frequently Asked Questions
What is the best Gemini RPG? Burning Sun V2 and the Gamekeeper RPG Prompt share the top score among the Gemini games we have played. Burning Sun V2 is the one to sit down and play: NPCs react to what you do, and a switchable storyteller mode sets the tone of the whole story. Gamekeeper is more useful as a trick to borrow, a visible save-state you can paste back in.
Can I make my own Gemini RPG? Yes. Create a Gem, put a game master prompt in its instructions, and upload any world notes or rules as knowledge files, so every session starts from the same foundation. If you would rather not write the prompt yourself, our free AI RPG Prompt Builder assembles one in under a minute.
The Gemini scene is early. For everything available across every model, see Arcanum’s complete directory of LLM RPG games, the public games directory, or every platform in the clients directory.