Leebo
at 2021-06-14 21:39:55 UTC
https://jisho.org/search/%E3%82%BF%E3%82%A4%E3%83%A0%E3%82%A2%E3%82%BF%E3%83%83%E3%82%AF
Wikipedia indicates the リアル is optional.
Leebo
at 2021-06-14 21:42:12 UTC
Though I guess you're just talking about the use of RTA, which, yes, does have the R.
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RTA (Real Time Attack)
This is apparently Japanese for Speed Running (video games).
※2：RTA……“Real Time Attack”のこと。ゲームのスタートからクリアーまでにかかった現実の時間を競う競技。
https://www.famitsu.com/news/202106/14223605.html