| Feature                    | Steam               | Epic  | Discord | Kartridge |
|----------------------------|---------------------|-------|---------|-----------|
| Redemption keys            |**Yes**              |**Yes**|**Yes**  |**Yes**    |
| Friends list               |**Yes**              |**Yes**|**Yes**  |**Yes**    |
| Chat                       |**Yes**              |**Yes**|**Yes**  |**Yes**    |
| In-game purchases (mtx)    |**Yes**              |**Yes**|**Yes**  |**Yes**    |
| Refunds within 2 weeks     |**Yes**              |**Yes**|**Yes**  |**Yes**    |
| Windows                    |**Yes**              |**Yes**|**Yes**  |**Yes**    |
| Mac                        |**Yes**              |**Yes**|No       |**Yes**    |
| Linux                      |**Yes**              |No     |No       |No         |
| User reviews               |**Yes**              |No     |**Metacritic**|**Yes**|
| User profiles              |**Yes**              |No     |**Yes**  |**Yes**    |
| Add external games         |**Yes**              |No     |**Yes**  |No         |
| Groups                     |**Yes**              |No |**Servers**|**Chatrooms**|
| Cloud saves                |**Yes**              |No     |**Yes**  |No         |
| Voice chat                 |**Yes**              |No     |**Yes**  |No         |
| Forums                     |**Yes**              |No     |No|**Kongregate.com**|
| Store search / filter      |**Yes**              |No     |**Yes**  |**Yes**    |
| Library sorting            |**Yes**              |No     |**Yes**  |No         |
| Profile vanity metagame    |**Yes**              |No     |**Yes**  |**Yes**    |
| Client languages           |**28**               |**13** |**27**   |1          |
| Wish lists                 |**Yes**              |No     |No       |**Yes**    |
| Loyalty points / rewards   |**Trading cards**    |No     |No       |**Tokens** |
| Stats/achievements         |**Yes**              |No     |No       |**Yes**    |
| Free game giveaways        |**Free weekends**    |**Yes**|No       |**Tokens** |
| Coupons                    |**Yes**              |No     |No       |**Yes**    |
| Leaderboards               |**Yes**              |No     |No       |No         |
| Controller configurator    |**Yes**              |No     |No       |No         |
| Big picture /10ft TV mode  |**Yes**              |No     |No       |No         |
| Account sharing            |**Family Share**     |No     |No       |No         |
| Streaming to other devices |**In-home streaming**|No     |No       |No         |
| Broadcasting               |**Yes**              |No     |No       |No         |
| Screenshot capture/sharing |**Yes**              |No     |No       |No         |
| User-created guides        |**Yes**              |No     |No       |No         |
| Mod distribution           |**Workshop**         |No     |No       |No         |
| Item trading               |**Marketplace**      |No     |No       |No         |
| Supported currencies       |**39**               |**9**  |???      |Just USD   |
| Referral rewards           |No                   |**Creator Tag**|???|No       |
| Pay What You Want games    |No                   |No     |No       |**Yes**    |
| External game scanner      |No                   |No     |**Yes**  |No         |