Direct answer
Deagle Arena is accessed through Roblox. Its official experience page documents PC, controller, and mobile controls; it does not confirm separate console, cross-play, cross-save, or private-server support for this guide to publish.
Platform and input matrix
| Access or input | Status | What is documented |
|---|---|---|
| Roblox experience | Confirmed | The official Deagle Arena experience page is the verified access route. |
| PC input | Confirmed | M1 shoots, M2 aims, and C or Ctrl slides. |
| Controller input | Confirmed | R2 shoots, L2 aims, and B or Circle slides. |
| Mobile input | Confirmed | The experience lists on-screen buttons and hold-to-aim shooting. |
| Console and cross-play | Not verified | The reviewed official listing does not confirm a separate console or cross-play claim. |
| Private servers | Not verified | No public claim is made here without an official source. |
Why “Roblox access” is the useful answer
The experience page gives players one official place to launch Deagle Arena. The listed PC, controller, and mobile controls show which input paths the developer has documented, but they do not prove every device, storefront, or account feature that Roblox might support in general.
For the specific button assignments, use the Deagle Arena controls guide. It avoids filling in extra bindings that are not on the official experience page.