You can use this JavaScript. Its still semi-manual but speeds things up a bit. Works on Chromium-Based browsers for sure. You might need to change the sleep delay. 6000ms = 6sek worked for me.
function sleep(ms) {
return new Promise(resolve => setTimeout(resolve, ms));
}
$("button[value=claim]").each(function(){
$element = $(this);
$.post( location.href, {
csrf_token: $element.siblings("[name=csrf_token]")[0].value,
game_id: $element.siblings("[name=game_id]")[0].value,
action: "claim"
})
});
await sleep(5000);
$("a.next_page")[0].click()