Can I move 了 to the end? 我下载很多游戏了。
Yes
What is the pronunciation of 载? the pinyin shows 3rd tone, but the voices both speak fourth tone.
It is xiàzài. 载3 is less common and has a different meaning, e.g. 报载 (bàozǎi, newspaper report)
My dictionary says xia4zai4 for download
The mouse over hints bugged out