When comparing Arkham Horror vs Cosmic Encounter, the Slant community recommends Cosmic Encounter for most people. In the question“What are the best board games?” Cosmic Encounter is ranked 9th while Arkham Horror is ranked 21st. The most important reason people chose Cosmic Encounter is:
The basic rules of the game are background noise. The alien powers, both individually and as they interact with each other, determine the dynamic of each game you play, and each dynamic is radically different. For example, you can try different races and alien powers each time you play, and the way to mix and match them is almost limitless. This makes every game feel different than the one before it.
Specs
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Pros
Pro Lots of expansion boards available
Currently there are 8 licensed expansions on the manufacturer's site. There are also many fan made expansions available online as well thanks to the games large and friendly community. Both the manufacturer's and community expansions add plenty of new content to the game including cards, investigators, board addons, Heralds (mini-bosses), Ancient Ones, spells, and items.
Pro Scales well from solo to large groups
The game supports up to 8 players, which is something of a feat for a game of its size and components. Makes for a great party game due to the size of players it allows. However, at the lower end it can also be enjoyed with one or two players, making it great for intimate gaming session. No matter how few players you have available, you'll be able to enjoy the game.
Pro Great challenge for those that enjoy difficult games
The win conditions of the game are quite slim and require one to know the rules ins and outs, so while not a game for casual players it is a game for the hardcore who enjoy a challenge.
Pro Well-crafted
Big map, lots of items and heroes with their own graphics, player figures on plastic stands; lots of tokens and monster cards made of firm cardboard.
Pro Lots of choices
Each location offers you different opportunities to trade for and to explore. The imaginary hero class (like tank, mage, support, stealth) is up to you and usually not well-tied to hero abilities.
Even when apocalypse comes, you still (might) have a chance to defeat the planetary evil.
Pro Great atmosphere of Lovecraft tales
Your weak heroes have to dive into parallel realities, use magic, defeat unknown guests and apply unique artifacts. Each game's location has its own secrets and 'contacts' with various outcomes — good and bad.
Pro Role-oriented
You either choose by yourself or get a random hero, and play with them the whole party (if you were not killed, of course). You and your hero have skills, items, unique qualities and effects, and their story.
The game itself encourages role-playing elements to dive into the Lovecraftian environment.
Pro Highly cooperative
Though the rules do highlight "best players of the game" via basic calculations, the game itself is aimed towards collaboration. To win, everyone must commit to the victory, and you often forget about the existence of a "best player".
The game allows players to exchange items or help other players via skills, special abilities and magic. In practice, players often compete their tasks in pairs and more, e.g. they close gates in pairs, where one has to clean the entrance from monsters, and the other seals the gates.
Pro Each game is unique
The game starts by choosing a random boss and/or heroes. Each turn begins with the myth phase, whose effects apply from a random card in the deck. These effects include monster movement, game-wide buffs and de-buffs, quests, monster gate breaches, etc. You will never know if you will be able to win the game.
Items and skills are usually taken randomly too.
Pro Every game is unique
The basic rules of the game are background noise. The alien powers, both individually and as they interact with each other, determine the dynamic of each game you play, and each dynamic is radically different. For example, you can try different races and alien powers each time you play, and the way to mix and match them is almost limitless. This makes every game feel different than the one before it.
Pro The social component of the game requires you to strategize with other players
It's almost impossible to win on your own. When attacking or defending, you will get the chance to ask for allies on your turn, or assist others when they are engaged. Allies can help you win the attack or defense, but they will also gain benefits if successful. It is a team-based game, although each player is out for themselves in the end.
One of the neatest parts of the game are the negotiate cards - instead of laying down an attack card you can try to negotiate. If you both play negotiate cards, you have 1 minute to come to an agreement which can include creating new colonies, trading cards, or virtually anything. If the players don't come to agreeable terms within a minute, they both suffer a hefty penalty (4 of their ships are sent to the warp).
Pro Potential for very satisfying, creative plays
With so many unique combinations of alien powers and the fact you can form unstable alliances with other players, there's so many ways to get creative. For example, knowing when and where to pick your battles. Perhaps two other players just had an epic battle and now they're down a few ships - it would be the perfect time to swoop in and try to colonize their planets when they're weakened. Perhaps you have a special power that will give you an edge in a certain fight against another player. By paying attention to what's going on around you at all times, skillful tacticians will find all kinds of extremely clever or amusing plays to be possible.
Pro Great illustrations on the cards
Illustrations on Alien Power cards are beautifully rendered and imaginative. Each one features full color, hand drawn creatures that are distinctly unique and look like something out of a sci-fi movie.
Pro You have some influence over the theme of each game
At the beginning of each game, players are given 3-4 alien powers to choose from, usually taken at random. However, if you were trying to put together a specific theme - for example, a war between certain aliens races, or a battle using only certain powers - you can manually select the set of powers available to each player. This allows you to generate personalized games that have specific story to them or heavily revolve around a particular strategy or resource.
Pro This is an exercise in social dynamics as much as a board game
Working with or against other players, forming unstable alliances, and negotiating with other players creates some situations which will test your real world social skills.
Pro Excellent expansions
There are six expansions which not only add a minimum of 20 new alien races with new powers each, but they also brings unique gameplay mechanics to the table. For example, Cosmic Conflict adds space quake hazards, and Cosmic Alliance adds new rules for teams and expands the game to 7 players.
Pro Not as complicated as it might sound
After you play one or two games, the basic mechanics become trivial to work with. Additionally, you only have to worry about learning as many alien powers as you have players in the game, so your personal knowledge and experience with the powers can grow slowly over time. Most alien powers take a minute or two to really understand, then the fun begins of finding creative or unique ways to develop strategies around them.
Cons
Con Very unaproachable
Arkham Horror has a lot of moving parts, its rules are difficult to follow, and the gameplay itself is pretty difficult. This all adds up to a game that is very unapproachable and will take the most dedicated of players to really understand the whole concept put forth.
Con Huge rules
24+ pages of rules. Though they are well-written, highly illustrated, enriched with small data tables, it is easy to forget small details, especially when some critical rule is applied, e.g., for just one type of bosses.
Con Long
The game is very long (several hours).
Con Playing alone or in small team (2-3) is usually easy and boring
Arkham is best enjoyed when played by teams of 4 and more.
Con Long preparation time
Laying out all the things may eat up to 30 minutes (without extensions).
Con Hard to find
It was actually released in 2005 and currently out of stock at official page.
Con Can cause arguments
Due to the nature of the game, which has you working with others and then turning against them in the same breath, it can create some situations where people are going to feel used or mistreated. This can result in a lot of fighting or arguments, especially when playing with easily offended people.
Con Unbalanced
In situations where all players gang up on just one single player.
Con Some alien powers are difficult to parse
Some of the cards have walls of text that look intimidating at first, and may take a slow read and group discussion to really figure out. Thankfully, the alien powers are divided into three sets based on "difficulty" which translates roughly to "difficulty to understand, and how much it disrupts basic gameplay." Green (easy) cards are usually simple enough that a child of 12 or so can understand them.
Con Might be hard to teach
This is one of those games that has to be played to be fully understood. As such, it can be hard to teach someone. It will take new players a few rounds to start understanding.