Instantoto — the slots & casino data API for builders
Query 381 slots from 24 game studios — RTP, volatility, reels, mechanics and release year — over a clean, keyless JSON API and a fully browsable reference site. Built for comparison sites, bots, research and AI.
One request, clean JSON
# Highest-RTP slots, as JSON curl "https://instantotodata.com/api.php?\ endpoint=slots&min_rtp=97&sort=-rtp&limit=3"
No API key. CORS-open. Filter by provider, volatility, RTP band, mechanics; sort on any field; paginate with cursors. Full reference →
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Highest RTP slots right now
| Slot | Provider | RTP | Volatility | Reels | Max win | Year |
|---|---|---|---|---|---|---|
| BOBook of 99Relax Gaming · 2021 | Relax Gaming | 99.00% | High | 5x3 | 5000x | 2021 |
| BSBlood SuckersNetEnt · 2011 | NetEnt | 98.00% | Low | 5x3 | 900x | 2011 |
| MJMega JokerBooming Games · 2017 | Booming Games | 98.00% | Medium | 5x3 | 2000x | 2017 |
| WRWhite RabbitBig Time Gaming · 2017 | Big Time Gaming | 97.24% | High | 5-reel | 13000x | 2017 |
| BSBlood Suckers IINetEnt · 2018 | NetEnt | 97.00% | Medium | 5x3 | 2500x | 2018 |
| GNGuns N' RosesNetEnt · 2012 | NetEnt | 96.98% | High | 5x3 | 5000x | 2012 |
| DFDragon's FireBig Time Gaming · 2016 | Big Time Gaming | 96.90% | High | 6x5 | 5000x | 2016 |
| DHDragon Hatch 2NetGame · 2024 | NetGame | 96.90% | High | 5x3 | 10000x | 2024 |
What people build on Instantoto
📊 Comparison tables
Power RTP / volatility comparison widgets with always-consistent, structured data — no scraping.
🤖 Bots & AI tools
Feed slot metadata into chatbots, calculators and research notebooks. Machine-readable, with an OpenAPI spec and llms.txt.
🧩 Embeddable widgets
Drop a “Top RTP slots” widget on any page with one script tag. Generate an embed →
Explore the database
Frequently asked questions
Do I need an API key to use Instantoto?
No. The slots data API is free to query without an API key or account. The documentation lists the available endpoints, filters and pagination options.
What information does the Instantoto API return?
The API provides slot metadata including provider, RTP, volatility, reels, mechanics and release year. You can browse the same reference data on the site.
Can I place a bet or play for money on Instantoto?
No. Instantoto is an informational data service. It does not accept wagers, offer gambling or pay out winnings.
Does a listed RTP guarantee a result?
No. RTP is a theoretical figure supplied for research and comparison. It does not predict or guarantee the result of an individual session.
