A contract in which the consideration between parties is unequal is

Conditional contracts require the occurrence of a specific event to enforce the obligations of the parties involved. While they may also involve unequal consideration, the key feature is the dependency on a condition, such as a contract for the sale of property contingent upon the buyer securing financing. This does not inherently imply unequal consideration like an aleatory contract does.

Personal contracts are agreements that involve specific individuals and may include unique terms tailored to those parties. The focus here is on the identity of the parties rather than the nature of the consideration. Therefore, this type of contract does not specifically address the inequality of consideration between the parties.

Unilateral contracts are those in which one party makes a promise that is contingent upon the performance of an act by another party. While they may involve unequal consideration, the defining trait is the promise made by one party, not the unequal exchange of value. An example would be a reward contract, where payment is offered for the completion of a task.