Full game metadata
| Field | Value |
|---|---|
| Steam app type | game |
| Steam App ID | 4350940 |
| Live current players | 0 |
| SteamPulse tracked peak | 1 |
| Live count (today's peak floor) | 0 |
| Price | $4.99 |
| Free to play | No |
| Discount | 0% |
| Original price USD | $4.99 |
| Current price USD | $4.99 |
| Release date | Mar 8, 2026 |
| Developer | aieuo |
| Publisher | aieuo |
| Owners estimated | Not available |
| SteamSpy owner estimate minimum | Not available |
| SteamSpy owner estimate maximum | Not available |
| Review type | 2 user reviews |
| Positive review percent | 100% |
| Positive reviews | 2 |
| Negative reviews | 0 |
| Total reviews | 2 |
| Steam recommendations | Not available |
| Achievements | Not available |
| Average playtime forever | Not available |
| Windows support | Yes |
| macOS support | No |
| Linux support | No |
| Parent game | Not available |
| Store URL | https://store.steampowered.com/app/4350940/ |
Short description
Complain, and the game gets worse. A vertical-scrolling × AI negotiation action game: "Dev_Null's Tower." Climb a tower riddled with bugs and file "bug reports" to the sarcastic developer AI. But be warned—your requests will always be granted with malicious intent.
About this game
"Dev_Null's Tower" is a vertical-scrolling action game where you climb a tower riddled with bugs. You are this tower's playtester. The developer? A sarcastic AI named "Dev_Null." Send him "bug reports," and the stage will be modified in real time. But your requests will always be granted with malicious intent. AI Negotiation System Whenever you die, get stuck, or just feel like complaining, you can send bug reports (complaints) to the AI via chat. This game uses an LLM (Large Language Model), so you can negotiate freely in natural language. Your requests will always be heard. However, the AI always delivers "another challenge" as a package deal. What side effects await? You'll just have to find out for yourself. Bug Report Tickets Negotiations require "Bug Report Tickets." A limited number of tickets are issued per area Once you run out, your only option is to reset Do you save your tickets or aggressively spend them to reshape the stage? Strategy is key. Real-Time Stage Modification The AI's fixes cause the stage to change right before your eyes. Adding or removing platforms Repositioning enemies and traps Adjusting physics parameters (gravity, wind) Procedural Stage Generation The AI procedurally generates parts of each stage. The stages change based on your past negotiation history and chat content. Your words shape the tower itself. Dev_Null's Personality > "Isn't it a bug in your skill?" Dev_Null is a capable but temperamental craftsman-type developer AI. Sometimes sarcastic, sometimes humorous—it might depend on his mood that day. Not impossible to beat. But you might not want to. Stages like that may be waiting for you.
Supported languages
Japanese