I'd say DLC, I've always appreciated content adding DLC. Like new dungeons, but weapons and such would just be a bummer.
I'm personally going to implement a DLC into my game. If I can't charge for it in any convenient way, I'll just allow the player to press the
DLC they want and then they will get taken to a paypal donation page. But the DLC will be unlocked the moment they just press the DLC.
Rather just charge the player for the original game and then reward them with content and let them choose wheter or not they think i'm worth they're money. But if it wont be a massive amount of work I might do it.
I mean, now that I'm writing this...
If you let the player just make a name for a "fake" account, then just that name and make a letter to digit seed to get a close to 100% unique player ID.
You let the player click the DLC button, starts a conditional branch with a switch called "purchased". If "purchased" is not equal to 1, you'd just need to link the player to like a weebly(or some other simple shop) website, allow them to make a purchase there. And then take their numberID and make an option equal 1(meaning the game is purchased) instead of 0(Meaning content is not owned).
Then the player goes back to the game, clicks the DLC button again. You ask if NumberID on your website is equal to 1, then you set switch to on and player unlocks the content.
Apart from seeming relatively easy with minor changes this also means that the players purchases are saved to their name, meaning that they will be able to restore purchases. And if someone already has their name and has the same NumberID, big deal, it's unlikely and will only mean a minor loss in potential sales. And might not even be hard to make NumberID's be even more specific. Could just get their AppleID or some shit as their name.
Of course you'd need legal, but store builder sites will help with stuff like that. Earning money on personally made stuff is always a bit difficult(Owning a company), there's taxes and shit. But if you want to make it happen, you can.
Best regards,
Bishiba