https://www.steamgifts.com/discussion/lFCmb/event-lazy-christmas-2017
http://lazyguysbundle.com/christmas/
刚才看到的圣诞活动，简单说一下
1. 右上企鹅看板娘不定时会发key 先抢先赢
2. 圣诞愿望：许愿送你steam key
3. 交换礼物：每人送1个key，交换礼物！
没参加过这种活动，凑个热闹 ^^