Apex Legends is a free to play game but it does have a few different paid editions that include a bunch of cosmetics. Respawn Entertainment is giving away one of them, the Octane Edition, for a week on PC.
Respawn Entertainment didn't specify the exact reason for giving away the Octane Edition but it's possible this is connected with encouraging the players to stay in self-isolation.
Anyway, this edition usually costs $19.99 and includes:
- Legendary Arachnoid Rush Octane skin
- Legendary Arachnoid Charge Rifle skin
- Exclusive Violet Widow gun charm
- Exclusive Venomous badge
- 1,000 Apex Coins
However, for the duration of the week that started with 23 March 2020, Respawn Entertainment will be giving away this edition for free. The announcement tweet didn't specifically state so but this looks like a raffle rather than guaranteed free goodies.
As for the rules of participating, it seems like the typical Twitter promotion. In order to enter the raffle, the players need to comment on the post and write what they are enjoying the most in Apex Legends' Season 4. Participants need to be over 18 years old and probably need to include #RespawnGiveaway in the comment.
Most of the replies so far don't include the hashtag but it shouldn't hurt to have it along, just in case it is required.
Keep in mind that this giveaway is only for PC players, but the wording in Respawn Entertainment's announcement hints that console versions will get similar events in the coming weeks.