Run at http://store.steampowered.com/dynamicstore/userdata/

// @author Royalgamer06 <https://royalgamer06.ga/>
// @description Finds the count and appids of all the recent -1's due to Valve's Web API changes
// @match http://store.steampowered.com/dynamicstore/userdata/

var json = JSON.parse(document.body.innerText);
var rem = [467530,361660,526270,581280,392870,506170,396390,462060,335080,521190,543420,239410,290710,360130,405040,562650,581690,344750,431000,399700,388870,268830,217080,356330,33440,324450,475060,594210,290410,500930,314700,36620,392050,581050,486340,572870,374140,568650,568890,586250,458900,540120,575730,457940,467560,463620,415490,596600,488720,581860,383030,512200,473630,396400,540050,581350,546450,508220,582480,407740,407750,474870,567940,485700,210150,224220,378020,585720,442110,250240,473490,253130,382970,483260,360760,452780,403130,645810,501720,448130,412720,547810,457930,364110,444180,373110,440260,491250,503530,468050,409310,329950,616910,581680,603920,209710,294120,445730,562710,330110,473620,473650,516230,473640,473580,235760,527570,467460,481890];
var games = [];
rem.forEach(appid => {
if (json.rgOwnedApps.indexOf(appid) > -1) {
games.push(appid);
}
});
console.log("Your game count went down by -" + games.length + ", which included these appids: ", games);