Play now at rocketcrab.com
rocketcrab is a lobby service and launcher for mobile web party games.
- Make sure your game has mobile support, and does not require a login or registration
- Add an API to your game that create a new room/lobby when called
- Copy
config/games/_template.ts
and fill it out for your game - ...that's pretty much it. Submit a PR!!! If you'd like more detail, keep reading!
Rocketcrab makes it easy for players to discover your game, and easily switch to and from your game without having to manually open a different website and enter a new game code. It accomplishs this by putting your game's page into an iframe
, which allows any of your cookies, local storage, analytics, and advertising to continue working, while disallowing rocketcrab from manipulating your site. Integrating your game with rocketcrab should be a simple process, but please let me know by opening an issue or joining our Discord if there is any way it could be better!
Games are added to rocketcrab via config files located here. By looking at the config files of other games, you might be able to understand how other games implement rocketcrab, and how you might integrate rocketcrab into your game. Here's what you need to know:
Rocketcrab works by opening your game in an iframe
on all of the players' devices. At minimum, for your game to work with rocketcrab, there must be:
- A way for rocketcrab to generate a new party via either:
- an API that rocketcrab can hit (eg.
https://yourgame.com/api/creategame
, which returns the generated game code, likeabcd
) - generating a random id that your game will accept as a valid room code
- an API that rocketcrab can hit (eg.
- A way to construct a link to join a game using that game code (eg.
https://yourgame.com/abcd
will be opened on every player's browser, resulting in them all being in the same game together)
That's it! Many existing games already offer these, and can work with rocketcrab without any changes! But, to make the experience of playing your game with rocketcrab even better, you may need to make a few minor changes, explained in the "The automatic query params" section below.
The config files, as mentioned above, should be fairly self explanatory. Along with the config template, check out the config files of other games to see how they implement rocketcrab. The most important part, which will be explained here, is the connectToGame
function. This function:
- is
async
, which will allow you to useawait
to makeGET
orPOST
requests. - needs to return an object with these properties:
playerURL
(required) string of the url that should be opened in every player'siframe
.hostURL
(optional) string of a url to be opened only in the "host" player'siframe
. If not provided, theplayerURL
will be used.customQueryParams
(optional) a record of query params in addition to or to replace the automatic query params. See the config template for more info.afterQueryParams
(optional) string that will be appended to theplayerURL
after automatic and custom query params are applied.
Here are three examples of different connectToGame
functions:
- For Drawphone, a new game can be generated with a
POST
request to the/new
, which will return a game code. In it'sconnectToGame
function, the/new
endpoint is called, and the resulting game code is returned in thecode
property, which will add the code as a query param calledcode
to theplayerURL
that is opened in each player'siframe
. - For Spyfall, a new game can be generated in the exact same way as Drawphone. But, game links are required to take the format
spyfall.tannerkrewson.com/abcd
, and notdrawphone.tannerkrewson.com/?code=abcd
like the above example. So, instead of returning the game code fromconnectToGame
in thecode
property, the game code is directly appended to theplayerURL
before it is returned fromconnectToGame
. - For Just One, we can pick our own game code! So, instead of calling to some endpoint to get a game code like Drawphone and Spyfall, the
connectToGame
function can itself generate a code, and we cross our fingers and hope it's unique! 😂 The resultingplayerURL
will look something like this:https://just1.herokuapp.com/room/rocketcrab-d5b30ccdd25855e5
.
The playerURL
returned from connectToGame
is automatically appended with 3 query params. The resulting playerURL
that is opened in every player's iframe
will look something like this:
https://yourgame.com/?rocketcrab=true&name=Mary&ishost=true
rocketcrab
will always be true, well, if you're using rocketcrab, that is! 😂 You can use this to put your game into a "rocketcrab" mode. Here are some ideas for how this could be helpful:- Rocketcrab itself has it's own game code system, so if your game prominentely displays its own game code, your players may be confused. If
rocketcrab=true
, you should hide any UI in your game that shows the game code! - You should also hide any "Play on 🚀🦀" buttons (see the next section), because if
rocketcrab=true
, they're already playing with on rocketcrab! 😂
- Rocketcrab itself has it's own game code system, so if your game prominentely displays its own game code, your players may be confused. If
name
is a string of the name that each player has entered into rocketcrab. Use this instead of asking for your players' names a second time!ishost
istrue
for the one player that is the host of the rocketcrab party, andfalse
for all other players. A few caveats:- I included this in case some one needed it, but implementing this in your game could allow any player that knows about it to make themselves host, especially outside of rocketcrab, so I don't recommend it.
- In Drawphone, for example, the first player who joins a party is made the host. So, rocketcrab will load the host's
iframe
first, and will wait a few seconds before opening theiframe
of the rest of the players. This is not a guaranteed solution, as theiframe
API does not allow rocketcrab to know when its page has loaded.
- There used to be an automatic
code
parameter for the game code. This was removed in favor of using a custom query param, detailed further in the template.
If your game already has a player base, our goal is to make rocketcrab just as easy, if not easier, to use than how they already play. Rocketcrab is also a great way for your players to discover new games, which helps developers with no players yet find players for their games! So, we will want to make the process of discovering and jumping into a rocketcrab party from your game's existing lobby as painless as possible! Here's two features of rocketcrab to help:
- Place a button on the homepage of your game that links to
https://rocketcrab.com/transfer/[your game's id here]/
.- This will place the user in a new rocketcrab party with your game already selected!
- Your game's ID is the
id
that is set for your game in its config file. For example, Drawphone's isdrawphone
, so the link would look likehttps://rocketcrab.com/transfer/drawphone/
.
- Place a button in the party of your game that, when clicked by one player, will transfer all players to
https://rocketcrab.com/transfer/[your game's id here]/[insert a uuid here]
.- The first time this link is followed, it will create a new rocketcrab party. Any subsequent time it is followed, it will place users into the same rocketcrab party that was created with the same
uuid
. - Again, for the most seamless experience, when any player clicks the button, your game should automatically redirect all players in the lobby to this link right away.
- The uuid should be unique to each lobby in your game, but the same for each player in the lobby.
- To generate the uuid, this uuid package would be best, but any very long random string will do.
- An example of a link for Drawphone:
https://rocketcrab.com/transfer/drawphone/9b1deb4d-3b7d-4bad-9bdd-2b0d7b3dcb6d/
- Make sure you hide this button if the players are using you game through rocketcrab, or else they could do this!
- The first time this link is followed, it will create a new rocketcrab party. Any subsequent time it is followed, it will place users into the same rocketcrab party that was created with the same
For an example of both of these buttons in action, check out snakeout.tannerkrewson.com. Here's what the code looked like for them.
This is a Next.js project bootstrapped with create-next-app
using the with-typescript-eslint-jest
template, which includes:
- Typescript
- Linting with ESLint
- Formatting with Prettier
- Linting, typechecking and formatting on by default using
husky
for commit hooks - Testing with Jest and
react-testing-library
First, run the development server:
npm run dev
Open http://localhost:3000 with your browser to see the result.
You can start editing the page by modifying pages/index.js
. The page auto-updates as you edit the file.
To learn more about Next.js, take a look at the following resources:
- Next.js Documentation - learn about Next.js features and API.
- Learn Next.js - an interactive Next.js tutorial.
You can check out the Next.js GitHub repository - your feedback and contributions are welcome!