Vikings War of Clans offer review

Good offer but takes time to complete. After some initial time investment you usually just wait on timer until you can construct next building or gather enough resources to do it. There are several techniques how you can super-speed your progress, see Tips section of this guide.

Terms: Install, Open & Reach Palace level 5/10/12.
Reward: $3 - $5
Platforms: Android and iOS
Offerwalls availability: AdGate, OfferToro, Adscend and others
Time investment: 10 minutes for Palace level 5, 3 days+ for Palace level 10
First time investment: ~1 week
Rating: B- (Worth it)

Tips:

• Each palace level has some other buildings requirements. Fulfill the requirements and upgrade Palace to next level.
• Usually you will have enough resources to build, but after level 6 buildings will take too much time to complete so you just wait on timer until it is constructed or use speed-ups to 
• Upgrade building time reduction knowledge and skills from hero.
• To earn speed-ups:
• You can attack monsters on map to get some random loot. Sometimes it includes speed-ups but they are usually short-time one. But it will generate some Hero XP so you can start acquiring Building 2 skill, it will reduce building time for higher level buildings
• Complete personal events - some easy events (attack monsters, construct buildings, do research, yield resources) will give you some gold and speed-ups that you can use for faster progress
• Complete clan events - join a clan and after a day or 2 you will be able to participate in clan events which will yield a lot of speed-ups and gold. If your clan is good (i.e. other players fulfill requirements well) - you will reach higher rewards tiers that helps a lot.
• Sometimes they have maintenance / unexpected maintenance and provide server-wide generous reward to players for a day. Sometimes it can be ton of speed-ups, VIP points or gold. It can help a lot meeting offer goal.
• In this game it is also makes sense to train some troops and harvest nearby resource huts (relocate closer to level 5 or 6 resource huts area, they yield much faster).
• In recent offer terms it usually states requirement of Palace level 12, but it actually tracks after achieving Palace level 10.