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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.
Price history tracked since Jul 7, 2026 · vs all tracked offers.
Based solely on tracked price history — not purchase advice.
Tracked since Jul 7, 2026.
Steam Train Fest starts Jul 20, 2026
Official stores with direct support.
"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.
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)
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.
> "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.
Right now the cheapest offer for Dev_Null’s Tower is PLN 22.99 at Steam. KingsPrice compares 1 offers from 1 stores — official stores and keyshops — and refreshes prices throughout the day.
The lowest price KingsPrice has tracked for Dev_Null’s Tower is PLN 18.39 (recorded on Jul 7, 2026). This covers the stores and period we monitor — set a price alert to catch the next drop to that level.
Create a free price alert on this page and KingsPrice will email you when Dev_Null’s Tower drops below your chosen price. The biggest discounts usually appear during seasonal Steam sales and publisher promotions — the sale calendar on this page shows the next confirmed event.
