During this period there was a crisis of the liberal oligarchic regime, and so the literature of the era is characterized by new forms of language, such as the grotesque style, fierce and corrosive humor, parody, and satire.
Nevertheless, the works tend to fit within the same thematic context: disenchantment with the model of the state provided by Costa Rican politicians.
These include those belonging to the "Lira costarricense" such as Aquileo J. Echeverría and Lisímaco Chavarría, and those of the Olympus generation such as Carlos Gagini and Ricardo Fernández Guardia.
At this time, modernism was not very influential despite Rubén Darío's stay in the country, where he wrote poems and published articles in local newspapers.
Marchena is one of the most important despite his having written only one book (Alas en fuga), which published in 1941, when modernism had become obsolete in other Hispanic countries.
Examples of this movement include the novels Las hijas del campo and El moto by Joaquín García Monge, which harshly criticize the old rural society and the oligarchy of village chiefs, and El árbol enfermo y La caída del águila by Carlos Gagini, which warn against the danger of foreign influence.
This group of poets published the Manifiesto trascendentalista (1977), signed by Laureano Albán, Julieta Dobles, Carlos Francisco Monge, and Ronald Bonilla.
Carlos Francisco Monge wrote the essay "Un manifiesto veinte años después" on the same topic in 1997; it is included in his book ' The '70s generation is a group of novelists that have criticized the exhaustion of the political project carried out after the founding of the Second Republic after the end of the civil war of 1948.
Writers born before 1965 who have published works after 1990 include Jorge Arroyo, Rodolfo Arias Formoso, Adriano Corrales Arias, Anacristina Rossi, Francisco Rodríguez Barrientos, Osvaldo Sauma, Guillermo Fernández Álvarez, Rodrigo Soto, Carlos Cortés Zúñiga, Jorge Arturo, Vernor Muñoz, Tatiana Lobo, Uriel Quesada, Ana Istarú, José Maria Zonta, Hugo Rivas (deceased), Wilbert Bogantes, José Ricardo Chaves, Dorelia Barahona, Fernando Contreras Castro, Carlos Morales, and Alexánder Obando.
Poets born after 1965 who have published after 1990 include Juan Antillón, Mauricio Molina Delgado, David Maradiaga, Luis Chaves, Melvyn Aguilar, María Montero, Esteban Ureña, Jeanette Amit, Julio Acuña (deceased), Alfredo Trejos, Joan Bernal, Gustavo Solórzano Alfaro, Mauricio Vargas Ortega, Alejandra Castro, Patrick Cotter, Felipe Granados (deceased), Paula Piedra, Laura Fuentes, Camila Schumaher, David Cruz, Vivian Cruz, Alejandro Cordero, William Eduarte, and Luis Chacón.
Fiction writers born after 1965 who have published after 1990 include Heriberto Rodríguez, Mauricio Ventanas, Catalina Murillo, Manuel Marín, Jessica Clark Cohen, Juan Murillo, Laura Quijano, Alí Víquez Jiménez, Marco Castro, Mario León, Guillermo Barquero, Antonio Chamu, Jesús Vargas Garita, Gustavo Adolfo Chaves, Carlos Alvarado, Albán Mora, David Eduarte, Diego Montero, Mauricio Chaves Mesén.
Major Costa Rican writers include Roberto Brenes Mesén, with his poems in En el silencio; Carmen Lyra, writer of Cuentos de mi Tía Panchita; Carlos Luis Fallas Sibaja, with his novels Mamita Yunai, Gentes y gentecillas, Mi madrina and Marcos Ramírez; Fabián Dobles, with the novel El sitio de las abras; Joaquín Gutiérrez, with novels including Puerto Limón, Muramonos, Federico and Te accordás, hermano; Yolanda Oreamuno with her novel La ruta de su evasión; Carlos Salazar Herrera, with Cuentos de angustias y paisajes; Eunice Odio, with her poetry collection Tránsito de fuego; and Isaac Felipe Azofeifa, with Cima del gozo.